<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scale">
    <title>表单和图片</title>
    <link rel="stylesheet" href="css/bootstrap.min.css"/>
    <script src="js/jquery.min.js"></script>
    <script src="js/bootstrap.min.js"></script>
    <style>

    </style>
</head>
<body style="margin:50px;">
<img src="img/1.jpg" alt="图片" class="img-rounded">
<img src="img/1.jpg" alt="图片" class="img-circle">
<img src="img/1.jpg" alt="图片" class="img-thumbnail">


</body>
</html>